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102 <br /> Level of Service D Standards for Expressways * <br /> COASTAL 2 Lanes Per Direction 3 Lanes Per Direction 4 Lanes Per Direction <br /> Urban Suburban Rural Urban Suburban Rural Urban Suburban Rural <br /> 0-5% Trucks 47500 58500 58800 71200 87700 88300 95000 117000 117700 <br /> 6-10% Trucks 46400 57100 57400 69500 85600 86200 92700 114200 114900 <br /> 11-15% Trucks 45300 55800 56100 67900 83700 84200 90600 111500 112200 <br /> 16-20% Trucks 44200 54500 54800 66400 81800 82200 88500 109000 109700 <br /> 21-25% Trucks 43300 53300 53600 64900 79900 80400 86500 106600 107200 <br /> 26-30% Trucks 42300 52100 52400 63500 78200 78700 84700 104300 104900 <br /> 31-35% Trucks 41400 51000 51300 62100 76500 77000 82900 102100 102700 <br /> PIEDMONT 2 Lanes Per Direction 3 Lanes Per Direction 4 Lanes Per Direction <br /> Urban Suburban Rural Urban Suburban Rural Urban Suburban Rural <br /> 0-5% Trucks 47500 58500 58800 71200 87700 88300 95000 117000 117700 <br /> 6-10% Trucks 46400 57100 57400 69500 85600 86200 92700 114200 114900 <br /> 11-15% Trucks 45300 55800 56100 67900 83700 84200 90600 111500 112200 <br /> 16-20% Trucks 44200 54500 54800 66400 81800 82200 88500 109000 109700 <br /> 21-25% Trucks 43300 53300 53600 64900 79900 80400 86500 106600 107200 <br /> 26-30% Trucks 42300 52100 52400 63500 78200 78700 84700 104300 104900 <br /> 31-35% Trucks 41400 51000 51300 62100 76500 77000 82900 102100 102700 <br /> MOUNTAIN 2 Lanes Per Direction 3 Lanes Per Direction 4 Lanes Per Direction <br /> (Level Terrain) Urban Suburban Rural Urban Suburban Rural Urban Suburban Rural <br /> 0-5% Trucks 47500 53200 58800 71200 79800 88300 95000 106400 117700 <br /> 6-10% Trucks 46400 51900 57400 69500 77900 86200 92700 103800 114900 <br /> 11-15% Trucks 45300 50700 56100 67900 76100 84200 90600 101400 112200 <br /> 16-20% Trucks 44200 49500 54800 66400 74300 82200 88500 99100 109700 <br /> 21-25% Trucks 43300 48400 53600 64900 72700 80400 86500 96900 107200 <br /> 26-30% Trucks 42300 47400 52400 63500 71100 78700 84700 94800 104900 <br /> 31-35% Trucks 41400 46400 51300 62100 69600 77000 82900 92800 102700 <br /> MOUNTAIN 2 Lanes Per Direction 3 Lanes Per Direction 4 Lanes Per Direction <br /> (Rolling Terrian) Urban7 Suburban Rural Urban Suburban Rural Urban Suburban Rural <br /> 0-5% Trucks 41200 50700 56100 61700 76100 84200 82300 101400 112200 <br /> 6-10% Trucks 38500 47400 52400 57700 71100 78700 77000 94800 110400 <br /> 11-15% Trucks 36100 44500 49200 54200 66700 73900 72200 89000 98500 <br /> 16-20% Trucks 34000 41900 46400 51100 62900 69600 68100 83900 92800 <br /> 21-25% Trucks 32200 39600 43900 48300 59500 65800 64400 79300 87700 <br /> 26-30% Trucks 30500 37600 41600 45800 56400 62400 61000 75200 83200 <br /> 31-35% Trucks 29000 35700 39600 43500 53600 59300 58000 71500 79100 <br /> Uses "Multi-lane Highways" Facility Type in NCLOS <br /> *Assumes Regional K and D Factor Averages <br /> See Appendix 1131 for HCM 2000 Multi-lane Highway Equations <br /> Use Appendix 132: Coastal Expressway Inputs for adjustments <br /> Use Appendix 133: Piedmont Expressway Inputs for adjustments <br /> Use Appendix 134: Mountain (Level) Expressway Inputs for adjustments <br /> Use Appendix 135: Mountain (Rolling) Expressway Inputs for adjustments <br /> NOTE: Truck percentage occurs within the peak hour, not a daily truck percentage <br /> 7 Updated 10/14/2011 <br />